Safety shield system for a syringe
First Claim
1. A medical syringe for delivering a medicament to a patient, comprising:
- a syringe assembly comprising a barrel having a forward end and a rear end and defining a reservoir within which a medicament may be contained, and a needle cannula having a forward tip and being coupled to said forward end of said barrel and in fluid communication with said reservoir, a hub provided on said forward end of said barrel;
a shield movably mounted on said hub at a first position;
an urging member for urging said shield in a forward direction relative to said barrel; and
a cover sleeve having a rear end connected to one of said hub and said barrel and a front end, said cover sleeve surrounding a portion of said hub, said shield being movable from said first position to a second position against the urgency of said urging member when said needle cannula is inserted into a patient for delivery of the medicament and said shield being moveable from said second position to a third position by the influence of said urging member upon removal of said needle cannula from said patient, wherein said shield is locked in said third position and said forward tip of said needle cannula is covered by said shield when said shield is in said third position.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device includes a syringe assembly and a shield system for delivering medicament to a patient. The syringe assembly includes a barrel defining a medicament reservoir, and a needle cannula coupled to the barrel and in fluid communication with the reservoir. The shield system has a hub coupled to the syringe barrel, a shield movably arranged on the hub, the shield being movable from a first position disposed from the needle cannula tip to a second position during insertion of the needle into a patient and movable from the second position to a third position covering the needle cannula tip after the needle cannula is removed from the patient. An urging member urges the shield to the third position upon removal of the needle cannula from the patient. A cover sleeve connected to the needle barrel surrounds the hub and the urging member.
236 Citations
43 Claims
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1. A medical syringe for delivering a medicament to a patient, comprising:
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a syringe assembly comprising a barrel having a forward end and a rear end and defining a reservoir within which a medicament may be contained, and a needle cannula having a forward tip and being coupled to said forward end of said barrel and in fluid communication with said reservoir, a hub provided on said forward end of said barrel;
a shield movably mounted on said hub at a first position;
an urging member for urging said shield in a forward direction relative to said barrel; and
a cover sleeve having a rear end connected to one of said hub and said barrel and a front end, said cover sleeve surrounding a portion of said hub, said shield being movable from said first position to a second position against the urgency of said urging member when said needle cannula is inserted into a patient for delivery of the medicament and said shield being moveable from said second position to a third position by the influence of said urging member upon removal of said needle cannula from said patient, wherein said shield is locked in said third position and said forward tip of said needle cannula is covered by said shield when said shield is in said third position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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- 30. A shield assembly for connection to a syringe barrel for preventing inadvertent needle sticks after use of the syringe, the shield assembly comprising a hub provided on a forward end of the syringe barrel, a shield movably mounted on said hub at a first position, and an urging member for urging said shield in a forward direction relative to said barrel, and a cover sleeve having a rear end connected to one of said hub and the syringe barrel and a front end, said cover sleeve surrounding a portion of said hub, said shield being movable from said first position to a second position against the influence of said urging member when said needle cannula is inserted into a patient for delivery of the medicament and said shield being moveable from said second position to a third position by the urgency of said urging member upon removal of said needle cannula from said patient, wherein said shield is locked in said third position and said forward tip of said needle cannula is covered by said shield when said shield is in said third position.
Specification